Method for determining organic phosphorus pesticide residues in Grosvenor Momordica fruit through gas chromatography-mass spectrometry

A technology for organophosphorus pesticides and Luo Han Guo, which is applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of unpublished detection of organophosphorus pesticide residues, etc., and achieve the effects of strong practical value, good reproducibility, and easy operation.

Inactive Publication Date: 2016-08-31
GUANGXI DAIYUAN VEGETABLE PROD
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Problems solved by technology

However, none of the above-mentioned literature records discloses the method of using gas chromatography-mass spectrometry to detect the residues of organophosphorus pesticides in Luo Han Guo.

Method used

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  • Method for determining organic phosphorus pesticide residues in Grosvenor Momordica fruit through gas chromatography-mass spectrometry
  • Method for determining organic phosphorus pesticide residues in Grosvenor Momordica fruit through gas chromatography-mass spectrometry
  • Method for determining organic phosphorus pesticide residues in Grosvenor Momordica fruit through gas chromatography-mass spectrometry

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Embodiment Construction

[0044] The present invention will be further described below with reference to specific embodiments, but the protection scope of the present invention is not limited to the following embodiments.

[0045] (1) Sample pretreatment: prepare the extraction solvent according to the volume ratio of petroleum ether and acetone 2:1, weigh 2 g of Luo Han Guo crude powder, put it in a 100 mL conical flask, add the extraction solvent, and place it in an ice bath for ultrasonic extraction for 10 min , filtered, the filter residue and filter were washed with 10 mL of extraction solvent, the filtrate was combined, placed in a 50 mL beaker, 0.2 g of activated carbon was added, placed for 5 min, shaken for several times to decolorize until the color became lighter, filtered, and extracted with solvent Wash the filter residue and filter, combine the filtrates, concentrate to near dryness, and dissolve in acetone to 10 mL to obtain the extract for later use;

[0046] (2) Preparation of organoph...

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Abstract

The invention discloses a method for determining organic phosphorus pesticide residues in Grosvenor Momordica fruit through gas chromatography-mass spectrometry. The method comprises the following steps: 1, weighing Grosvenor Momordica fruit medicinal material powder, carrying out ultrasonic extraction, washing the obtained extract, decolorizing the washed extract, concentrating the decolorized extract, and adding a solvent to a constant volume in order to prepare an extract liquid; and 2, detecting the extract liquid through gas chromatography-mass spectrometry. The method has the advantages of realization of simultaneous determination of eleven organic phosphorus pesticide residues in Grosvenor Momordica fruit, high accuracy, fast detection speed, good reappearance and strong practical values.

Description

technical field [0001] The invention relates to the field of pesticide residue detection, in particular to a method for determining organophosphorus pesticide residues in Luo Han Guo by gas-mass spectrometry. Background technique [0002] At present, most of the traditional Chinese medicinal materials sold in the market are artificially planted, and the use of pesticides in the planting process will inevitably cause pollution of traditional Chinese medicinal materials. Among them, organophosphorus pesticides are the most widely used and most widely used in my country. Synthetic phosphate esters There are more than 30 kinds of organophosphorus pesticides used in my country. In order to reduce the negative impact of pesticide residues in Chinese herbal medicines on the human body, it is very necessary to establish a detection method for organophosphorus pesticide residues in Chinese herbal medicines. [0003] Luo Han Guo is an authentic medicinal material in Guangxi, mainly pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
CPCG01N30/02G01N2030/025
Inventor 梁成钦陈旭付明磊周先丽黄晓罗琴苏小建程柳文君
Owner GUANGXI DAIYUAN VEGETABLE PROD
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